Följande ändringar har gjorts i klassreglerna inför säsongen 2010 (träder i kraft den 26:e mars):

Nuvarande regel:
G.4.2.3 Windows (max. 3) total area………………………………………. 0.28m2 (Maximum)
Shortest distance from window to sail edge ……150 mm

Antagna regeln:
G.4.2.3 Windows total area …………………………….. ………………. 0.9m2(Maximum)
Distance from window to sail edges …………..…150 mm

Nuvarande regel:
G.5.4 Windows (max. 3) total area………………………………………. 0.28m2(Maximum)
Shortest distance from window to sail edges …..…150 mm

Antagna regeln:
G.5.4 Windows total area……………………………… ………………. 0.9m2(Maximum)
Distance from window to sail edges ………………150 mm